Drive Activity

The gadget determines the time each of your hard drives is busy
servicing read or write requests and draws a graph from this information.
In the settings dialog you can specify which drives to show/hide.

Drive Activity comes in quite handy, if you have more than
one hard drive in your computer. Since it is sometimes not that easy
to determine which hard drive is currently busy or idle, if you only
have your ears and one hard drive LED for all your hard drives.
With Drive Activity it is therefore quite easy to keep an eye
on possible performance bottlenecks in your system.